Lumino Industries announced on Sept. 23, 2026, that it will execute a three-phase expansion at its Ranihati, West Bengal, India, facility to raise combined cable and conductor capacity to 75,000 tonnes per annum and add high-tension (HT) power cable production up to 66 kV.
Three-phase buildout
The company said the program will be implemented in staged phases at the Ranihati plant, with incremental capacity additions culminating at 75,000 tpa. While Lumino did not disclose the investment value, equipment list, or startup dates for each phase, the plan is described as a near-doubling of current output. The phased approach is intended to maintain continuity of existing shipments while new lines and supporting systems come online.
Product scope and voltage class
A key element of the expansion is the introduction of HT power cables up to 66 kV. That capability positions the plant to supply India’s sub-transmission and high-end distribution requirements, where 33–66 kV circuits are seeing steady build-out for urban substations, renewable energy evacuation, and industrial loads. The company indicated that the upgrade will broaden its cable portfolio beyond existing offerings and expand service to utilities, EPC contractors, and industrial customers. Specific product constructions and applicable standards were not detailed.
Why it matters for India’s grid
India’s ongoing grid modernization—driven by discom loss-reduction programs, data center growth, and the integration of solar and wind—continues to shift demand toward higher-capacity conductors and HT cable systems for 33–66 kV networks. Domestic manufacturing at these voltage classes can compress lead times and reduce exposure to import volatility for utilities and EPCs executing time-bound projects. By lifting throughput and moving into 66 kV, the Ranihati facility can help meet tender requirements for sub-transmission upgrades and renewable corridors, while providing additional headroom for future export opportunities in neighboring markets that specify comparable voltage classes.
Operational considerations
Although Lumino did not provide a commissioning schedule, a three-phase execution typically prioritizes debottlenecking and line balancing before introducing higher-spec processes for HT insulation, screening, and testing. Sequencing those steps helps preserve quality, especially as product complexity rises with voltage. The company’s note that the final capacity represents a near-doubling underscores the scale of added material handling, in-line inspection, and quality assurance needed to support higher output at consistent performance levels.
Outlook
If timelines align with utility and EPC tender calendars, the added capacity and 66 kV capability should be well placed for India’s next wave of sub-transmission buildouts. Further disclosures on capex, equipment scope, and phase-by-phase start dates will clarify how quickly the new capability can translate into tender participation across state utilities and private infrastructure projects.
